In my experience, when used in the correct situation, Boveda packs have been helpful. I once over-dried a grow by a little bit. I popped one in each jar, burped it once a day, and within a few days to a week, everything stabilized exactly at the 58% RH that the Boveda pack was rated at. Once the humidity was stable for a week or two, I removed the packs and put them back in their storage bags. It's important to know that Boveda packs don't really help with the cure, they help with the humidity which helps with the cure - treat it like medicine...you only need to use it when something isn't quite right. No need to keep them in there or use them at all once the RH is stable. Didn't notice any difference in taste, however it would be interesting to do a side-by-side test to see if they do. My thought would be that if a jar of weed needs a Boveda pack, something went wrong. And that something very possibly is what's affecting the flavor of buds as opposed to the Boveda pack. But like I said, a side-by-side blind taste test would be interesting to do! Maybe I'll do that with a jar on my next cure!